replication

SYNC_CLIENT(8)						      System Manager's Manual						    SYNC_CLIENT(8)

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NAME

       sync_client - client side of the synchronization (replication) engine

SYNOPSIS

       sync_client [ -v ] [ -l ] [ -z ] [ -C config-file ] [ -S servername ]
		   [ -f input-file ] [ -F shutdown_file ] [ -w wait_interval ]
		   [ -t timeout ] [ -d delay ] [ -r ] [ -u ] [ -m ]
		   [ -s ] objects...

DESCRIPTION

       Sync_client  is the client side of the replication system.  It runs on the client (master) system and connects to the target (replica) sys-
       tem and generates an appropriate sequence of transactions to synchronize the replica system with the master system.

OPTIONS

       -v     Verbose mode.

       -l     Verbose logging mode.

       -o     Only attempt to connect to the backend server once rather than waiting up to 1000 seconds before giving up.

       -z     Enable compress.	If you set 'sync_compress' in the imapd.conf or pass -z to sync_client, the replication protocol will  attempt	to
	      enable deflate compression on the connection.

       -C config-file
	      Read configuration options from config-file.

       -S servername
	      Tells sync_client which server to communicate with.  Overrides the sync_host configuration option.

       -f input-file
	      In  mailbox  or  user replication mode: provides list of users or mailboxes to replicate.  In rolling replication mode, specifies an
	      alternate log file (sync_client will exit after processing the log file).

       -F shutdown-file
	      Rolling replication checks for this file at the end of each replication cycle and shuts down if it is present. Used to request  nice
	      clean  shutdown  at  first  convenient  point.  The file in question is removed on shutdown.  Overrides sync_shutdown_file option in
	      imapd.conf

       -w interval
	      Wait this long before starting. Typically used so that we can attach a debugger to one end of the replication system or the other.

       -t timeout
	      Timeout for single replication run in rolling replication.  sync_client will negotiate a restart after this many	seconds.  Default:
	      600 seconds

       -d delay
	      Minimum  delay between replication runs in rolling replication mode.  Larger values provide better efficiency as transactions can be
	      merged.  Smaller values mean that the replica system is more up to date and that you don't end up with large blocks  of  replication
	      transactions as a single group. Default: 3 seconds.

       -r     Rolling  (repeat)  replication mode. Pick up a list of actions recorded by the lmtpd(8), imapd(8), popd(8) and nntpd(8) daemons from
	      the file specified in sync_log_file.  Repeat until sync_shutdwon_file appears.

       -n     Use the named channel for rolling replication mode.  If multiple channels are specified in sync_log_channels then use one  of  them.
	      This option is probably best combined with -S to connect to a different server with each channel.

       -u     User mode.  Remaining arguments are list of users who should be replicated.

       -m     Mailbox mode.  Remaining arguments are list of mailboxes which should be replicated.

       -s     Sieve mode.  Remaining arguments are list of users whose Sieve files should be replicated.  Principally used for debugging purposes:
	      not exposed to sync_client(8).

FILES

       /etc/imapd.conf

SEE ALSO

       sync_server(8)

AUTHORS

       David Carter (dpc22@cam.ac.uk), Ken Murchison (ken@oceana.com)

CMU
								   Project Cyrus						    SYNC_CLIENT(8)